Akroan Horse [Mystery Booster] Elf Druid Mwonvuli Ooze's power and toughness

Mwonvuli Ooze's power and toughness are each equal to 1 plus twice the number of age counters on it

Set: Onslaught Type: Creature — Beast Rarity: Common Cost: {4}{G} Cycling {2} ({2}

Set: Aether Revolt Type: Enchantment — Aura Rarity: Uncommon Cost: {4}{W} Enchant creature or Vehicle

but the skies are even more so

Akroan Horse [Mystery Booster] Elf Druid Mwonvuli Ooze's power and toughnessSet: Mystery Booster Type: Artifact Creature Horse Rarity: Rare Cost: {4} Defender When Akroan Horse enters the battlefield, an opponent gains control of it. At the beginning of your upkeep, each opponent creates a 1 1 white Soldier creature token.